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| author | dim <dim@FreeBSD.org> | 2012-08-15 19:34:23 +0000 |
|---|---|---|
| committer | dim <dim@FreeBSD.org> | 2012-08-15 19:34:23 +0000 |
| commit | 721c201bd55ffb73cb2ba8d39e0570fa38c44e15 (patch) | |
| tree | eacfc83d988e4b9d11114387ae7dc41243f2a363 /utils/TableGen/CodeEmitterGen.cpp | |
| parent | 2b2816e083a455f7a656ae88b0fd059d1688bb36 (diff) | |
| download | FreeBSD-src-721c201bd55ffb73cb2ba8d39e0570fa38c44e15.zip FreeBSD-src-721c201bd55ffb73cb2ba8d39e0570fa38c44e15.tar.gz | |
Vendor import of llvm trunk r161861:
http://llvm.org/svn/llvm-project/llvm/trunk@161861
Diffstat (limited to 'utils/TableGen/CodeEmitterGen.cpp')
| -rw-r--r-- | utils/TableGen/CodeEmitterGen.cpp | 37 |
1 files changed, 35 insertions, 2 deletions
diff --git a/utils/TableGen/CodeEmitterGen.cpp b/utils/TableGen/CodeEmitterGen.cpp index 3943e8a..31a39b1 100644 --- a/utils/TableGen/CodeEmitterGen.cpp +++ b/utils/TableGen/CodeEmitterGen.cpp @@ -13,13 +13,15 @@ // //===----------------------------------------------------------------------===// -#include "CodeEmitterGen.h" #include "CodeGenTarget.h" #include "llvm/TableGen/Record.h" #include "llvm/ADT/StringExtras.h" #include "llvm/Support/CommandLine.h" #include "llvm/Support/Debug.h" +#include "llvm/TableGen/TableGenBackend.h" #include <map> +#include <string> +#include <vector> using namespace llvm; // FIXME: Somewhat hackish to use a command line option for this. There should @@ -30,6 +32,27 @@ MCEmitter("mc-emitter", cl::desc("Generate CodeEmitter for use with the MC library."), cl::init(false)); +namespace { + +class CodeEmitterGen { + RecordKeeper &Records; +public: + CodeEmitterGen(RecordKeeper &R) : Records(R) {} + + void run(raw_ostream &o); +private: + void emitMachineOpEmitter(raw_ostream &o, const std::string &Namespace); + void emitGetValueBit(raw_ostream &o, const std::string &Namespace); + void reverseBits(std::vector<Record*> &Insts); + int getVariableBit(const std::string &VarName, BitsInit *BI, int bit); + std::string getInstructionCase(Record *R, CodeGenTarget &Target); + void AddCodeToMergeInOperand(Record *R, BitsInit *BI, + const std::string &VarName, + unsigned &NumberedOp, + std::string &Case, CodeGenTarget &Target); + +}; + void CodeEmitterGen::reverseBits(std::vector<Record*> &Insts) { for (std::vector<Record*>::iterator I = Insts.begin(), E = Insts.end(); I != E; ++I) { @@ -214,7 +237,6 @@ void CodeEmitterGen::run(raw_ostream &o) { // For little-endian instruction bit encodings, reverse the bit order if (Target.isLittleEndianEncoding()) reverseBits(Insts); - EmitSourceFileHeader("Machine Code Emitter", o); const std::vector<const CodeGenInstruction*> &NumberedInstructions = Target.getInstructionsByEnumValue(); @@ -304,3 +326,14 @@ void CodeEmitterGen::run(raw_ostream &o) { << " return Value;\n" << "}\n\n"; } + +} // End anonymous namespace + +namespace llvm { + +void EmitCodeEmitter(RecordKeeper &RK, raw_ostream &OS) { + emitSourceFileHeader("Machine Code Emitter", OS); + CodeEmitterGen(RK).run(OS); +} + +} // End llvm namespace |
